Answer:
Among the options given on the question the correct answer is option D.
Progress on race relations can only occur if people use the democratic process to being about change.
Explanation: The excerpt is from the speech of Martin Luther King Jr. He was the legendary activist for African American to fight for their equality. However on the given lines on the excerpt Martin Luther expressed his belief that progress on racial relation can only occur if people use the democratic process to being about change.
Because, he mentioned on the speech that injustice in anywhere is a threat justice. If people think they are not the part of the incident and remain silent the injustice an indirect threat to them. Therefore, like in a democratic process the people should react to the injustice to prevent it wherever it happens.
Moreover, he cited that people who live in the United states they are not the outsider, no matter wherever from they are. So he asked people to leave up the narrow mind setting like an very conservative and to be democratic to accept all other races who lives in the United States.